gralloc4: remove dumpDebugInfo

dumpDebugInfo could be called by anyone. A safer
approach is for processes to dump their own buffers
via IMapper's dumpBuffers.

Bug: 137966819
Test: Compiles
Change-Id: I4c8c7a6415babfb93034ee8674ba0f40cd8c1bb8

graphics/allocator/4.0/IAllocator.hal

@@ -19,14 +19,6 @@ package android.hardware.graphics.allocator@4.0;
 import android.hardware.graphics.mapper@4.0;
 
 interface IAllocator {
-    /**
-     * Retrieves implementation-defined debug information, which will be
-     * displayed during, for example, `dumpsys SurfaceFlinger`.
-     *
-     * @return debugInfo is a string of debug information.
-     */
-    dumpDebugInfo() generates (string debugInfo);
-
     /**
      * Allocates buffers with the properties specified by the descriptor.
      *

graphics/mapper/4.0/utils/vts/MapperVts.cpp

@@ -71,13 +71,6 @@ sp<IAllocator> Gralloc::getAllocator() const {
     return mAllocator;
 }
 
-std::string Gralloc::dumpDebugInfo() {
-    std::string debugInfo;
-    mAllocator->dumpDebugInfo([&](const auto& tmpDebugInfo) { debugInfo = tmpDebugInfo.c_str(); });
-
-    return debugInfo;
-}
-
 const native_handle_t* Gralloc::cloneBuffer(const hidl_handle& rawHandle) {
     const native_handle_t* bufferHandle = native_handle_clone(rawHandle.getNativeHandle());
     EXPECT_NE(nullptr, bufferHandle);

graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h

@@ -45,8 +45,6 @@ class Gralloc {
 
     sp<IAllocator> getAllocator() const;
 
-    std::string dumpDebugInfo();
-
     // When import is false, this simply calls IAllocator::allocate. When import
     // is true, the returned buffers are also imported into the mapper.
     //

graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp

@@ -305,13 +305,6 @@ const std::set<StandardMetadataType> GraphicsMapperHidlTest::sRequiredMetadataTy
         StandardMetadataType::BLEND_MODE,
 };
 
-/**
- * Test IAllocator::dumpDebugInfo by calling it.
- */
-TEST_P(GraphicsMapperHidlTest, AllocatorDumpDebugInfo) {
-    mGralloc->dumpDebugInfo();
-}
-
 /**
  * Test IAllocator::allocate with valid buffer descriptors.
  */