Various other changes allowing Requests to restart have removed the
assertion that cleared requests are never restarted. There doesn't seem
to be any need currently to distinguish between a request that's cleared
by a call to Glide.with().clear() and a request that's cleared by Glide.
We can simplify the API and reduce confusion by just calling clear()
directly and removing pause() entirely.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=201439855

Pausing the request allows Glide to show a placeholder without starting the request.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=185590877

Along with disabling error prone for unit tests,
cuts build time by ~20s down to ~1min 40s.

pauseAllRequests() can be called when the activity is in the background to reclaim memory used by the active bitmaps. As the caches are unaffected by this, returning to the activity and loading is still fast.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=177660869

Sequence is either:
1. Obtain a RequestManager for a Fragment
2. Wait for Fragment to be destroyed
3. Start a new load with the RequestManager for the destroyed Fragment
4. Clear the new load with the application RequestManager (or any
RequestManager other than the one the load was started with).

Or:
1. Obtain a RequestManager for a Fragment
2. Obtain a RequestBuilder from the Fragment RequestManager
3. Pass the RequestBuilder to a background thread
4. Wait for the Fragment to be destroyed
5. Start a load with the RequestBuilder on the background thread
6. Clear the target returned from submit using the application manager.

If the request is null, we don’t need to do anything to clear it, so
we might as well treat the clear as successful. Doing so also matches
the behavior in RequestManager when we have a non-null Target with
a null Request.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=126915351

*** Reason for rollback ***

Rollforward with fixes

*** Original change description ***

Automated g4 rollback of changelist 116163387.

*** Reason for rollback ***

Broke []

*** Original change description ***

MOE automated commit.
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Merge pull request #854 from luxiaoyu/master

fix bug of DiskCacheStrategy.RESOURCE

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Merge pull request #856 from swankjesse/jwilson_0102_okhttp_3

Upgrade to OkHttp 3.

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Merge pull request #874 from TWiStErRob/aar

Introduce AAR publish for :library and stop publishing :gl...

***
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116316494

*** Reason for rollback ***

Broke []

*** Original change description ***

MOE automated commit.
-------------
Merge pull request #854 from luxiaoyu/master

fix bug of DiskCacheStrategy.RESOURCE

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Merge pull request #856 from swankjesse/jwilson_0102_okhttp_3

Upgrade to OkHttp 3.

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Merge pull request #874 from TWiStErRob/aar

Introduce AAR publish for :library and stop publishing :glide

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Merge pull request #761 from vanniktech/master_add_consumerproguardfiles

Add consumerProguardFiles configuration. Fixes #646

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Mer...

***
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116167265

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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=92474681

Fixes #303.

Fixes #128

Fixes #106.

Fixes #90