Remove DirectRenderer::disableScissorTest, always leave GL_SCISSOR_TEST enabled in GlRenderer

cc/gl_renderer.cc

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "cc/gl_renderer.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 221 matching lines @@
         m_isViewportChanged = false;
         m_context->reshape(viewportWidth(), viewportHeight());
     }
 
     makeContextCurrent();
     // Bind the common vertex attributes used for drawing all the layers.
     m_sharedGeometry->prepareForDraw();
 
     GLC(m_context, m_context->disable(GL_DEPTH_TEST));
     GLC(m_context, m_context->disable(GL_CULL_FACE));
+    GLC(m_context, m_context->enable(GL_SCISSOR_TEST));
     GLC(m_context, m_context->colorMask(true, true, true, true));
     GLC(m_context, m_context->enable(GL_BLEND));
     GLC(m_context, m_context->blendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA));
 }
 
 void GLRenderer::doNoOp()
 {
     GLC(m_context, m_context->bindFramebuffer(GL_FRAMEBUFFER, 0));
     GLC(m_context, m_context->flush());
 }
@@ skipping 763 matching lines @@
     drawQuadGeometry(frame, quad->quadTransform(), quad->quadRect(), binding.matrixLocation);
 
     GLC(context(), context()->bindTexture(GL_TEXTURE_RECTANGLE_ARB, 0));
 }
 
 void GLRenderer::finishDrawingFrame(DrawingFrame& frame)
 {
     m_currentFramebufferLock.reset();
     m_swapBufferRect.Union(gfx::ToEnclosingRect(frame.rootDamageRect));
 
-    GLC(m_context, m_context->disable(GL_SCISSOR_TEST));
     GLC(m_context, m_context->disable(GL_BLEND));
 }
 
 bool GLRenderer::flippedFramebuffer() const
 {
     return true;
 }
 
 void GLRenderer::toGLMatrix(float* flattened, const WebTransformationMatrix& m)
 {
@@ skipping 307 matching lines @@
     GLC(m_context, m_context->framebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textureId, 0));
 
     DCHECK(m_context->checkFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
 
     initializeMatrices(frame, framebufferRect, false);
     setDrawViewportSize(framebufferRect.size());
 
     return true;
 }
 
-void GLRenderer::enableScissorTestRect(const gfx::Rect& scissorRect)
+void GLRenderer::setScissorTestRect(const gfx::Rect& scissorRect)
 {
-    GLC(m_context, m_context->enable(GL_SCISSOR_TEST));
     GLC(m_context, m_context->scissor(scissorRect.x(), scissorRect.y(), scissorRect.width(), scissorRect.height()));
 }
 
-void GLRenderer::disableScissorTest()
-{
-    GLC(m_context, m_context->disable(GL_SCISSOR_TEST));
-}
-
 void GLRenderer::setDrawViewportSize(const gfx::Size& viewportSize)
 {
     GLC(m_context, m_context->viewport(0, 0, viewportSize.width(), viewportSize.height()));
 }
 
 bool GLRenderer::makeContextCurrent()
 {
     return m_context->makeContextCurrent();
 }
 
@@ skipping 251 matching lines @@
 
     releaseRenderPassTextures();
 }
 
 bool GLRenderer::isContextLost()
 {
     return (m_context->getGraphicsResetStatusARB() != GL_NO_ERROR);
 }
 
 }  // namespace cc