Revert of Add compositor support for half-float RGBA buffers and textures

gpu/command_buffer/service/test_helper.cc

Index: gpu/command_buffer/service/test_helper.cc
diff --git a/gpu/command_buffer/service/test_helper.cc b/gpu/command_buffer/service/test_helper.cc
index f92efed90e9a9797f57d5ced0753784f8f4c3ff9..ab4105f3c7761ced0aae854214c061116a73cbc0 100644
--- a/gpu/command_buffer/service/test_helper.cc
+++ b/gpu/command_buffer/service/test_helper.cc
@@ -494,7 +494,6 @@
 
   bool enable_es3 = context_type == CONTEXT_TYPE_WEBGL2 ||
       context_type == CONTEXT_TYPE_OPENGLES3;
-  bool allow_float_buffers = context_type != CONTEXT_TYPE_WEBGL1;
 
   EXPECT_CALL(*gl, GetString(GL_VERSION))
       .WillOnce(Return(reinterpret_cast<const uint8_t*>(gl_version)))
@@ -592,7 +591,7 @@
           .RetiresOnSaturation();
     }
 
-    if (status_rgba == GL_FRAMEBUFFER_COMPLETE && allow_float_buffers) {
+    if (status_rgba == GL_FRAMEBUFFER_COMPLETE && enable_es3) {
       EXPECT_CALL(*gl, TexImage2D(GL_TEXTURE_2D, 0, GL_R16F, width, width,
           0, GL_RED, GL_FLOAT, _))
           .Times(1)