gpu in-memory program cache implementation with a memory limit + lru eviction.

gpu in-memory program cache implementation with a memory limit + lru eviction. 

Wiring: 
- Added bindings for glProgramBinary, glGetProgramBinary, glProgramParameteri 
- Plumbed the shader cache from gl_channel_manager to program_manager 
- Program cache creation after first context is created 

Refactoring: 
- moved DoCompile to ProgramManager 

New: 
- added functionality to ShaderInfo to store if we have a possible pending cache compile 
- exposed attrib_map and uniform_map in ShaderInfo for the cache 
- program_cache base class with in-memory status storage 
- Simple memory_program_cache implementation, stores programs with lru eviction 
- Added caching logic to DoCompileShader and Link in ProgramMAnager 
- MemoryProgramCache, the in-memory cache implementation 
- ProgramCacheLruHelper, an O(1) lru implementation 

Misc: 
- A couple style fixes in modified files 

Design doc: https://docs.google.com/document/d/1Vceem-nF4TCICoeGSh7OMXxfGuJEJYblGXRgN9V9hcE/edit 

BUG=88572
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=147932

[dmurph, 2012-07-20 22:27:08]

Updated patch with the correct extension check, caching hint on desktop, and
force compile/link on load binary failure.  General cleanup as well.

[dmurph, 2012-07-20 22:47:36]

simplified binary loading logic, git trying again

[greggman, 2012-07-21 00:49:32]

just a few style issues otherwise LGTM

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
File gpu/command_buffer/service/memory_program_cache_unittest.cc (right):

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:177: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:196: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:237: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:258: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:292: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:324: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:343:
scoped_array<char> bigTestBinary =
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:372: char
testBinary[kBinaryLength];
style: variables are under_score

https://chromiumcodereview.appspot.com/10797055/diff/1040/gpu/command_buffer/...
gpu/command_buffer/service/memory_program_cache_unittest.cc:392: char
testBinary[kBinaryLength];
style: variables are under_score

[commit-bot: I haz the power, 2012-07-23 18:34:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dmurph@chromium.org/10797055/11001

[commit-bot: I haz the power, 2012-07-23 20:39:42]

Change committed as 147932