Reland "Reinitialize GL_VENDOR string when GPU switches"

This is a reland of 0f083ab0 Original change's description: > Reinitialize GL_VENDOR string when GPU switches > > We already update the GL_RENDERER string. We should do the same for > GL_VENDOR so this information is passed along correctly. > > Bug: chromium:1152212 > Change-Id: I639700bfebdc9e77ec3c6b41fcd6516e8c32139d > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2560824 > Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> > Reviewed-by: Geoff Lang <geofflang@chromium.org> > Commit-Queue: Jonah Ryan-Davis <jonahr@google.com> Bug: chromium:1152212 Change-Id: I044313366ce6ce7040e5c203a979b148dcb564dd Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2569364Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>

Reland "Reinitialize GL_VENDOR string when GPU switches"
ec0acf64 · Jonah Ryan-Davis · Commit Bot · 2c8bc1b7 · ec0acf64
Commit ec0acf64 authored Nov 25, 2020 by Jonah Ryan-Davis Committed by Commit Bot Dec 02, 2020
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Display.cpp src/libANGLE/Display.cpp +4 -2

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--- a/src/libANGLE/Display.cpp
+++ b/src/libANGLE/Display.cpp
@@ -2042,8 +2042,10 @@ void Display::returnScratchBufferImpl(angle::ScratchBuffer scratchBuffer,
    bufferVector->push_back(std::move(scratchBuffer));
 }
-egl::Error Display::handleGPUSwitch()
+Error Display::handleGPUSwitch()
 {
-    return mImplementation->handleGPUSwitch();
+    ANGLE_TRY(mImplementation->handleGPUSwitch());
+    initVendorString();
+    return NoError();
 }
 }  // namespace egl