gpu: Add Will/DidUseTexImage to GLImage API.

WillUseTexImage/DidUseTexImage is called before/after the image is
used for sampling. The result is that the client only has to call
bind/releaseTexImage2D when contents have changed, which allows
for more efficient GLImage implementations as work required before
use can be separated from work required when contents have changed.

BUG=261649
TEST=gpu_unittests --gtest_filter=SharedTextureTest.Images && gpu_unittests --gtest_filter=GLES2DecoderWithShaderTest.UseTexImage && cc_unittests --gtest_filter=ResourceProviderTests/ResourceProviderTest.Image_GLTexture* && gl_tests --gtest_filter=MockGpuMemoryBufferTest.Lifecycle

Review URL: https://codereview.chromium.org/23129010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229532 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 10 insertions, 4 deletions

diff --git a/ui/gl/gl_image_shm.cc b/ui/gl/gl_image_shm.cc
index 78e8164..5b182eb 100644
--- a/ui/gl/gl_image_shm.cc
+++ b/ui/gl/gl_image_shm.cc
@@ -40,6 +40,13 @@ bool GLImageShm::Initialize(gfx::GpuMemoryBufferHandle buffer) {
   return true;
 }
 
+void GLImageShm::Destroy() {
+}
+
+gfx::Size GLImageShm::GetSize() {
+  return size_;
+}
+
 bool GLImageShm::BindTexImage() {
   TRACE_EVENT0("gpu", "GLImageShm::BindTexImage");
   DCHECK(shared_memory_);
@@ -82,14 +89,13 @@ bool GLImageShm::BindTexImage() {
   return true;
 }
 
-gfx::Size GLImageShm::GetSize() {
-  return size_;
+void GLImageShm::ReleaseTexImage() {
 }
 
-void GLImageShm::Destroy() {
+void GLImageShm::WillUseTexImage() {
 }
 
-void GLImageShm::ReleaseTexImage() {
+void GLImageShm::DidUseTexImage() {
 }
 
 }  // namespace gfx